[pve-devel] [PATCH qemu-server v2 2/2] cleanup pci devices in more situations

[Dominik Csapak]

if the preparing of pci devices or the start of the vm fails, we need
to cleanup the pci devices (reservations *and* mdevs), or else
it might happen that there are leftovers which must be manually removed.

to include also mdevs now, refactor the cleanup code from 'vm_stop_cleanup'
into it's own function, and call that instead of only 'remove_pci_reservation'

Signed-off-by: Dominik Csapak <d.csa...@proxmox.com>
---
 PVE/QemuServer.pm | 40 ++++++++++++++++++++++++----------------
 1 file changed, 24 insertions(+), 16 deletions(-)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index c706653..5435410 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -5609,7 +5609,7 @@ sub vm_start_nolock {
        push @$cmd, '-uuid', $uuid if defined($uuid);
     };
     if (my $err = $@) {
-       eval { PVE::QemuServer::PCI::remove_pci_reservation($pci_id_list) };
+       eval { cleanup_pci_devices($vmid, $conf) };
        warn $@ if $@;
        die $err;
     }
@@ -5705,7 +5705,9 @@ sub vm_start_nolock {
     if (my $err = $@) {
        # deactivate volumes if start fails
        eval { PVE::Storage::deactivate_volumes($storecfg, $vollist); };
-       eval { PVE::QemuServer::PCI::remove_pci_reservation($pci_id_list) };
+       warn $@ if $@;
+       eval { cleanup_pci_devices($vmid, $conf) };
+       warn $@ if $@;
 
        die "start failed: $err";
     }
@@ -5870,6 +5872,25 @@ sub get_vm_volumes {
     return $vollist;
 }
 
+sub cleanup_pci_devices {
+    my ($vmid, $conf) = @_;
+
+    my $ids = [];
+    foreach my $key (keys %$conf) {
+       next if $key !~ m/^hostpci(\d+)$/;
+       my $hostpciindex = $1;
+       my $d = parse_hostpci($conf->{$key});
+       my $uuid = PVE::SysFSTools::generate_mdev_uuid($vmid, $hostpciindex);
+
+       foreach my $pci (@{$d->{pciid}}) {
+           my $pciid = $pci->{id};
+           push @$ids, $pci->{id};
+           PVE::SysFSTools::pci_cleanup_mdev_device($pciid, $uuid);
+       }
+    }
+    PVE::QemuServer::PCI::remove_pci_reservation($ids);
+}
+
 sub vm_stop_cleanup {
     my ($storecfg, $vmid, $conf, $keepActive, $apply_pending_changes) = @_;
 
@@ -5901,20 +5922,7 @@ sub vm_stop_cleanup {
            unlink '/dev/shm/pve-shm-' . ($ivshmem->{name} // $vmid);
        }
 
-       my $ids = [];
-       foreach my $key (keys %$conf) {
-           next if $key !~ m/^hostpci(\d+)$/;
-           my $hostpciindex = $1;
-           my $d = parse_hostpci($conf->{$key});
-           my $uuid = PVE::SysFSTools::generate_mdev_uuid($vmid, 
$hostpciindex);
-
-           foreach my $pci (@{$d->{pciid}}) {
-               my $pciid = $pci->{id};
-               push @$ids, $pci->{id};
-               PVE::SysFSTools::pci_cleanup_mdev_device($pciid, $uuid);
-           }
-       }
-       PVE::QemuServer::PCI::remove_pci_reservation($ids);
+       cleanup_pci_devices($vmid, $conf);
 
        vmconfig_apply_pending($vmid, $conf, $storecfg) if 
$apply_pending_changes;
     };
-- 
2.30.2



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